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Finding the Fourth Proportional to 30,818.88, 46,226.88 and 8,330.40

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Solution

The fourth proportional to 30,818.88, 46,226.88 and 8,330.40 is: 12,495.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,818.88 : 46,226.88 = 8,330.40 : x
  2. Step 2: Convert to fraction form
    30,818.88/46,226.88 = 8,330.40/x
  3. Step 3: Cross multiply
    30,818.88x = 46,226.88 × 8,330.40
  4. Step 4: Simplify right side
    30,818.88x = 385,088,401.15
  5. Step 5: Solve for x
    x = 385,088,401.15/30,818.88
  6. Step 6: Final answer
    x = 12,495.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.